Hi,
Can only say that I tanned all my life with no problems. The skin burning sensations started in January, but the only redness was face flushing which is autonomic nervous system/small fiber non-length dependent neuropathy, both dx'd back then. Face flushing still happens but not that often anymore.
However, don't dare go out in the sun for even ONE MINUTE until winter comes without an umbrella and/or very wide-brimmed sun resistant hat I bought on-line from Solumbra because I burn instantly. Oddly, arms and legs aren't affected as is the face.
Small fiber neuropathy and Sjogren's Syndrome can and will in some people dry out the skin in the extreme because it wipes out the body's moisture glands. I'm a probably Sjogren's case as well as NLD SFN.
Sorry I can't be of more help.
Sheltiemom
P.S. Have any of your docs checked out vasculitis?